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高圧ガス放電ランプを製造する方法、タングステン電極、高圧ガス放電ランプ、および照明ユニット
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(enrdf_load_html_response )
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1968-07-09
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1974-08-13
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1976-05-11
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1937-02-23
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带有含氧化镧的阴极的短汞弧灯
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1938-04-26
Incandescent electric lamp
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1999-09-14
Amalgam for use in fluorescent lamps comprising lead, tin, mercury together with another of the group silver, magnesium, copper, nickel, gold and platinum.
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1991-08-20
Method of fabricating a composite lamp filament
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1935-11-30
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1995-07-18
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